1. Ethernet: distributed packet switching for local computer networks;Metcalfe;Commun. ACM,1976
2. The Cambridge digital communication ring;Wilkes,1979
3. A loop network for simultaneous transmission of variable length messages;Liu,1975
4. Local network technology and the lessons of history;McQuillon;Comput. Net.,1980
5. OSI basic reference model TC97/SC16/537, Comput. Commun. Rev.;ISO,1980